Hecho general: 55770 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 55770 is an unremarkable number.
Trivia: 55770 is a boring number.
Fecha histórica: September 9th is the day in 1513 that James IV of Scotland is defeated and dies in the Battle of Flodden Field, ending Scotland's involvement in the War of the League of Cambrai.